Vulnerability Development mailing list archives
RE: PDF modifications?
From: "Dawes, Rogan (ZA - Johannesburg)" <rdawes () deloitte co za>
Date: Fri, 17 May 2002 17:02:50 +0200
My mistake. See http://www.foolabs.com/xpdf/cracking.html But, nonetheless, it is simple to make the mods, I'm sure. Rogan
-----Original Message----- From: Valdis.Kletnieks () vt edu [mailto:Valdis.Kletnieks () vt edu] Sent: 17 May 2002 02:51 To: Dawes, Rogan (ZA - Johannesburg) Cc: 'Sumit Dhar'; Kurt Seifried; bad bob; vuln-dev Subject: Re: PDF modifications? On Fri, 17 May 2002 08:14:18 +0200, "Dawes, Rogan (ZA - Johannesburg)" said:If the PDF is openable and viewable, but is "protected", sothat you can'tselect or print or annotate, that is easily bypassed with almost any non-Adobe PDF viewer, such as xpdf, which simply elects notto honour thatsetting in the PDF. The data is all there, because you canview it, it issimply a case of the software choosing to not let youselect it. Find somesoftware that doesn't honour those document settings, andyou are on yourway. As I recall, there was some discussion about this issue onthe xpdf lists,or somewhere, about whether xpdf should honour the documentrequests or not,but it is really moot, since the source is there, justmodify it to suit. Ithink that was the conclusion by the xpdf developers, sothey simply didn'tbother honouring the setting.This must have been pre-DMCA. I would recommend that the xpdf developers not visit the US, lest they be Skylarov'ed. (The vuln-dev connection? Consider why Alan Cox censored a Linux kernel changelog - but further discussion should probably be moved to a political list. If you're in the US and of voting age, contact your Congresscreature and tell them you want them to support Rep. Rick Boucher (D-VA) in his attempts to fix the anti-circumvention clause of the DMCA). We now return you to your regularly scheduled vuln-dev discussion, which may be in violation of the anti-circumvention clause.... -- Valdis Kletnieks Computer Systems Senior Engineer Virginia Tech
Current thread:
- Re: PDF modifications?, (continued)
- Re: PDF modifications? Marukka (May 15)
- RE: PDF modifications? security (May 16)
- Re: PDF modifications? Bogdan Tomchuk (May 17)
- RE: PDF modifications? Tziortzis,George (May 16)
- RE: PDF modifications? Javier Otero (May 16)
- RE: PDF modifications? Dawes, Rogan (ZA - Johannesburg) (May 17)
- Re: PDF modifications? Valdis . Kletnieks (May 17)
- RE: PDF modifications? João Sobral (May 17)
- RE: PDF modifications? Matthew Leeds (May 17)
- Re: PDF modifications? Valdis . Kletnieks (May 17)
- Re: PDF modifications? Marukka (May 15)
- Re: PDF modifications? Vladimir Katalov (May 17)
- RE: PDF modifications? Dawes, Rogan (ZA - Johannesburg) (May 17)